fix: Cannot duplicate document with title close to max title length

closes #1610

server/models/Document.js

@@ -5,6 +5,7 @@ import randomstring from "randomstring";
 import Sequelize, { Transaction } from "sequelize";
 import MarkdownSerializer from "slate-md-serializer";
 import isUUID from "validator/lib/isUUID";
+import { MAX_TITLE_LENGTH } from "../../shared/constants";
 import parseTitle from "../../shared/utils/parseTitle";
 import unescape from "../../shared/utils/unescape";
 import { Collection, User } from "../models";
@@ -90,8 +91,8 @@ const Document = sequelize.define(
       type: DataTypes.STRING,
       validate: {
         len: {
-          args: [0, 100],
-          msg: "Document title must be less than 100 characters",
+          args: [0, MAX_TITLE_LENGTH],
+          msg: `Document title must be less than ${MAX_TITLE_LENGTH} characters`,
         },
       },
     },